import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
Vue.use(VueRouter)

const routes = [
  // 重定向
  {path:'/',redirect:'/login'},
  {path: '/login',name: 'login',component: Login},
  {path: '/home',component: Home}
]

const router = new VueRouter({
  routes
})

router.beforeEach((to,from,next)=>{
  //to将要访问的路径
  //from代表从哪个路径跳转而来
  //next是一个函数，代表放行
  //next() 放行    next('/login')
  if(to.path==='/login') return next()
  //获取token
  const tokenStr=window.sessionStorage.getItem('token')
  if(!tokenStr) return next('/login')
  next()
})
export default router
